http://www.fresnostate.edu/folklore/ballads/CrAG30B.html says,

According to Ewan MacColl's book Journeyman: An Autobiography, re-edited and with an introduction by Peggy Seeger, 1990; revised edition, Manchester University Press, 2009, p. 268, this was one of the songs that came out of his first serious period of songwriting, when he was mildly influenced by Woody Guthrie, Seamus Ennis, and people he knew of through Alan Lomax. MacColl wrote that "I had recently become acquainted with English country songs through Bert [Lloyd]'s singing and through field-recordings made by Alan and it was these that provided models for my next group of songs which included 'The Dove,' 'The Trafford Road Ballad' (written for my son, Hamish), 'Cannily, Cannily,' 'Ballad of the Carpenter' and 'Go Down, You Murderers.'"